US4392971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat storage material
Assignee: Mitsubishi Electric Corp
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Filing: 1981-12-18
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Granted: 1983-07-12
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Expires: 2001-12-18
Abstract
Abstract A heat storage material comprises a composition of CaCl2.6H2O for preventing a crystallization of CaCl2.4H2O and 0.01 wt. % or more of at least one compound selected from the group consisting of KCl, RbCl, NaCl, NaF, Na3AlF6 and other double salts of NaF.
Inventors
- 👤 Hiroshi Kimura
- 👤 Junjiro Kai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:32
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
59 words
A heat storage material which comprises a composition of CaCl 2 .6H 2 O modified for preventing a crystallization of CaCl 2 .4H 2 O and 0.01 to 3 wt.% of at least one compound selected from the group consisting of KCl, RbCl, NaCl, NaF, NaMgF 3 , NaYF 4 , NaY 3 F 10 and NaThF 6 .
Claim 2
Dependent Claim
59 words
A heat storage material which comprises a composition of CaCl 2 .6H 2 O modified for preventing a crystallization of CaCl 2 .4H 2 O and 0.01 to 3 wt.% of at least one compound selected from the group consisting of KCl, RbCl, NaCl, NaF, NaMgF 3 , NaYF 4 , NaY 3 F 10 and NaThF 6 .
Claim 3
Dependent Claim
46 words
The heat storage material according to claim 1 wherein said composition modified for preventing a crystallization of CaCl 2 .4H 2 O comprises CaCl 2 hydrate having water content at a molar ratio of more than 6.0 and less than 6.14 based on CaCl 2 .
Claim 4
Dependent Claim
47 words
The heat storage material according to claim 1 or 2 wherein said composition modified for preventing a crystallization of CaCl 2 .4H 2 O further comprises at least one component selected from the group consisting of CaBr 2 .6H 2 O and MgBr 2 .6H 2 O.
References Cited (Backward Citations)
US1951886A
Cited
US3906140A
Cited
JPS512621A
Cited
JPS51144774A
Cited
US4119556A
Cited
US4175613A
Cited
US4234782A
Cited
US4338208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |